Difference between revisions of "Voltcraft VC-820"

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[[File:Voltcraft vc820 device.jpg|thumb|right|Voltcraft VC-820]]
{{Infobox multimeter
| image          = [[File:Voltcraft_vc820_device.png|180px]]
| name            = Voltcraft VC-820
| status          = supported
| source_code_dir = serial-dmm
| counts          = 4000
| categories      = CAT III (1000V) / CAT IV (600V)
| connectivity    = [[Device_cables#UNI-T_UT-D02|RS232]] / [[Device_cables#UNI-T_UT-D04|USB]]
| measurements    = voltage, resistance, diode, continuity, capacitance, frequency, duty cycle, current
| features        = autorange, hold, relative
| website        = [http://www.conrad.de/ce/de/product/123294/VOLTCRAFT-VC820-DMM/SHOP_AREA_17622&promotionareaSearchDetail=005 conrad.de]
}}


The [http://www.conrad.de/ce/de/product/123294/VOLTCRAFT-VC820-DMM/SHOP_AREA_17622&promotionareaSearchDetail=005 Voltcraft VC-820] is a 4000 counts, CAT III (1000V) / CAT IV (600V) handheld digital multimeter with RS232 or USB connectivity.
The '''Voltcraft VC-820''' is a 4000 counts, CAT III (1000V) / CAT IV (600V) handheld digital multimeter with RS232 or USB connectivity.


== Hardware ==
== Hardware ==


'''Multimeter''':
'''Multimeter''':
* Fortune Semiconductor FS9721_LP3
* '''Multimeter IC''': [http://www.ic-fortune.com/eng/new_product3_3.asp Fortune Semiconductor FS9721_LP3] ([http://www.ic-fortune.com/upload/Download/FS9721_LP3-DS-20_EN.pdf datasheet])
* 4MHz crystal
* '''Crystal''': 4MHz
* Fuses: 10A/250V and 500mA/250V (glass fuses)
* '''Fuses''': 10A/250V and 500mA/250V (glass fuses)


'''RS232 cable:'''
'''RS232 cable:'''
* See [[Multimeter cables#UNI-T_UT-D01]].
* See [[Device cables#UNI-T_UT-D02]].


'''USB cable:'''
'''USB cable:'''
* See [[Multimeter cables#UNI-T_UT-D04]].
* See [[Device cables#UNI-T_UT-D04]].


== Photos ==
== Photos ==
Line 21: Line 32:


<gallery>
<gallery>
File:Voltcraft vc820 device.jpg|<small>Device, front</small>
File:Voltcraft_vc820_device.jpg|<small>Device, front</small>
File:Voltcraft vc820 device back1.jpg|<small>Device, back</small>
File:Voltcraft vc820 device back1.jpg|<small>Device, back</small>
File:Voltcraft vc820 device back2.jpg|<small>Device, back w/o battery</small>
File:Voltcraft vc820 device back2.jpg|<small>Device, back w/o battery</small>
Line 48: Line 59:
'''RS232 cable:'''
'''RS232 cable:'''


See [[Multimeter cables#UNI-T_UT-D01]].
See [[Device cables#UNI-T_UT-D02]].


'''USB cable:'''
'''USB cable:'''


See [[Multimeter cables#UNI-T_UT-D04]].
See [[Device cables#UNI-T_UT-D04]].


== Protocol ==
== Protocol ==


The connection to the PC is done using a cable which converts the optical signal (IR) on the multimeter to RS232.
See [[Multimeter_ICs#Fortune_Semiconductor_FS9721_LP3]].


The serial connection uses '''2400 baud''' (hardcoded, cannot be changed) with 8n1 settings. The multimeter transmits 14-byte data packets periodically, the host can '''not''' send any commands whatsoever, only read the transmitted data.
A [http://www.produktinfo.conrad.com/datenblaetter/100000-124999/123294-da-01-en-Schnittstellenprotokoll_VC820.pdf short protocol description is also available from Voltcraft/Conrad].
 
A [http://www.produktinfo.conrad.com/datenblaetter/100000-124999/123294-da-01-en-Schnittstellenprotokoll_VC820.pdf short protocol description is available from Voltcraft/Conrad].


== Resources ==
== Resources ==


* [http://www.produktinfo.conrad.com/datenblaetter/100000-124999/123294-an-01-ml-VOLTCRAFT_VC820_DMM_de_en_fr_nl.pdf Manual]
* [http://www.produktinfo.conrad.com/datenblaetter/100000-124999/123294-up-01-en-Win7_32_64_Bit_VC820_DMM.zip Vendor software]
* [http://www.true-random.com/driver-for-the-cheap-digital-multimeter-vc-840vc-820.html true random: driver for the cheap digital multimeter VC 840/VC 820]
* [http://www.true-random.com/driver-for-the-cheap-digital-multimeter-vc-840vc-820.html true random: driver for the cheap digital multimeter VC 840/VC 820]
* [http://true-random.com/homepage/projects/vc840/index.html true random: Software for the multimeters vc840/vc820]
* [http://true-random.com/homepage/projects/vc840/index.html true random: Software for the multimeters vc840/vc820]
* [http://www.lrr.in.tum.de/~acher/vc840/index.html Georg Acher: Voltcraft VC820/VC840 und Linux]
* [http://www.lrr.in.tum.de/~acher/vc840/index.html Georg Acher: Voltcraft VC820/VC840 und Linux]
[[Category:Device]]
[[Category:Multimeter]]
[[Category:Supported]]

Latest revision as of 15:56, 15 December 2012

Voltcraft VC-820
Voltcraft vc820 device.png
Status supported
Source code serial-dmm
Counts 4000
IEC 61010-1 CAT III (1000V) / CAT IV (600V)
Connectivity RS232 / USB
Measurements voltage, resistance, diode, continuity, capacitance, frequency, duty cycle, current
Features autorange, hold, relative
Website conrad.de

The Voltcraft VC-820 is a 4000 counts, CAT III (1000V) / CAT IV (600V) handheld digital multimeter with RS232 or USB connectivity.

Hardware

Multimeter:

RS232 cable:

USB cable:

Photos

Multimeter:

  • Device, front

  • Device, back

  • Device, back w/o battery

  • Battery 1

  • Battery 2

  • Device, open

  • Device, open 2

  • Cover 1

  • Cover 2

  • Shielding

  • IR assembly

  • IR PCB, top

  • IR PCB, bottom

  • PCB, front

  • PCB, back

  • PCB, top

  • PCB, light 1

  • PCB, light 2

  • FS9721_LP3

  • Crystal

  • LCD, front

  • LCD, back

  • LCD, all segments

RS232 cable:

See Device cables#UNI-T_UT-D02.

USB cable:

See Device cables#UNI-T_UT-D04.

Protocol

See Multimeter_ICs#Fortune_Semiconductor_FS9721_LP3.

A short protocol description is also available from Voltcraft/Conrad.

Resources

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